15226890 has 64 divisors (see below), whose sum is σ = 43130880. Its totient is φ = 3366720.

The previous prime is 15226853. The next prime is 15226891. The reversal of 15226890 is 9862251.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15226891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5341 + ... + 7679.

It is an arithmetic number, because the mean of its divisors is an integer number (673920).

Almost surely, 2^15226890 is an apocalyptic number.

15226890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15226890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21565440).

15226890 is an abundant number, since it is smaller than the sum of its proper divisors (27903990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15226890 is a wasteful number, since it uses less digits than its factorization.

15226890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 15226890 is about 3902.1647838091. The cubic root of 15226890 is about 247.8584541744.

The spelling of 15226890 in words is "fifteen million, two hundred twenty-six thousand, eight hundred ninety".